US 11,986,242 B2
Full-field OCT method and system for generating an imaging of an ocular fundus
Peter Koch, Lübeck (DE); Gereon Hüttmann, Lübeck (DE); Helge Sudkamp, Lübeck (DE); Hendrik Spahr, Lübeck (DE); Dierck Hillmann, Lübeck (DE); and Michael Münst, Lübeck (DE)
Assigned to Visotec GmbH, Lübeck (DE)
Appl. No. 16/965,206
Filed by Visotec GmbH, Lübeck (DE)
PCT Filed Jan. 23, 2019, PCT No. PCT/EP2019/051601
§ 371(c)(1), (2) Date Jul. 27, 2020,
PCT Pub. No. WO2019/145348, PCT Pub. Date Aug. 1, 2019.
Claims priority of application No. 18153564 (EP), filed on Jan. 26, 2018.
Prior Publication US 2021/0038074 A1, Feb. 11, 2021
Int. Cl. A01B 3/12 (2006.01); A61B 3/10 (2006.01); A61B 3/12 (2006.01); G01B 9/02015 (2022.01); G01B 9/02055 (2022.01); G01B 9/02056 (2022.01); G01B 9/02091 (2022.01)
CPC A61B 3/1225 (2013.01) [A61B 3/102 (2013.01); G01B 9/02032 (2013.01); G01B 9/02058 (2013.01); G01B 9/02075 (2013.01); G01B 9/02091 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A full-field OCT method for generating an image representation of an ocular fundus, including the following steps:
a. emitting short-coherent light;
b. splitting the short-coherent light into an object beam path and a reference beam path, wherein the object beam path is guided onto the ocular fundus;
c. guiding the reference beam path and part of the object beam path reflected by the ocular fundus onto an image sensor such that interference between the reference beam path and the object beam path arises on the image sensor, wherein the reference beam path strikes the image sensor at an angle that deviates from the object beam path and wherein, prior to the incidence on the image sensor, the reference beam path strikes an optical correction element in order to reduce a chromatic deviation within the reference beam path;
d. ascertaining intensity information and phase information from a recording of the image sensor;
e. calculating a focus-corrected image of the ocular fundus from the ascertained intensity information and phase information.